One of the first children to be prescribed medical cannabis in the UK still can’t get her desperately-needed medication on the NHS. Jorja Emerson needs the drug to treat her severe epilepsy, which can cause life-threatening seizures, her father says. But, despite being prescribed a medication called Tilray by a private doctor in London in November, the Northern Irish family still can’t get it in their own country. Robin Emerson, 31, has had to pay…